高真空閥 美國A＆N公司 美國進口閥門

A＆N提供三（3）品種的真空截止閥：球閥，提升閥，閘閥。 These valves are designed to perform fully opened or closed and therefore are not intended for flow control.這些閥??門*打開或關閉，因此，不打算用于流控制的目的是執(zhí)行。 A brief description of each style of valve follows:每個款式的閥的簡要說明如下：

Ball Valves are available with port sizes ranging from 3/4” to 4”. 球閥可提供端口大小不等，從3/4“?4”。 These valves offer straight- through, unimpeded flow with minimal space requirements and ¼ turn actuation.這些閥??門提供直通式，以zui小的空間需求和¼圈驅動的暢通。 Manual and pneumatic versions are available.手動，氣動版本可供選擇。 Because of its unique valve seat configuration, the ball is wiped clean as it is opened.由于其*的閥座配置，球被擦拭干凈，因為它被打開。 As a result, these robust valves are less sensitive to particulate contamination and are especially useful in dirty vacuum applications.其結果是，這些強有力的閥是不太敏感的微粒污染，臟真空應用中是特別有用的。

Poppet Valves are available in three （3） body styles: 90° Angle, In-Line, and Angle In-Line. 提升閥，可在三（3）車身款式：90°角，線，角度線。 These valves are made of a body, actuator, and internal poppet.這些制成的閥主體，致動器，和內部的提升閥。 A pneumatic, bellows-sealed actuator transports the poppet linearly.一個氣動，波紋管密封閥芯線性致動器輸送。 The poppet seal is typically elastomeric therefore base pressures down to 10^-8 Torr may be achieved.提升閥密封件通常是彈性體，因此基地壓力下降到10 ^ -8乇，可以實現(xiàn)。 An all-metal version, with copper bonnet and valve seat, is also available.全金屬版，銅閥蓋，閥座，也可以使用。

Gate Valves are available with nominal apertures ranging from 1.5” to 12” inches. 閘閥 ，額定孔徑范圍從1.5“到12”英寸。 These valves provide straight-through, unimpeded flow with the smallest valve body profile.這些閥??門為直通式，暢通，與閥體zui小的個人資料。 Gate valves are ideal for space- constrained applications that require maximum conductance.閘閥是zui大電導為空間受限的應用中的理想選擇。 A central carriage or gate is transported by a pneumatic actuator within the body.一個*的滑架或柵極被輸送身體內的由氣動致動器。 In the open position the gate retracts compley from the tube aperture allowing unrestricted flow.在打開位置上的柵極從管孔徑*縮回允許不受限制地流動。 In the closed position an elastomer seal is compressed against a sealing surface thereby providing base pressures down to 10^-8 Torr.在閉合??位置??，對被壓縮的彈性體密封件的密封表面，從而提供基本的壓力下降到10 ^ -8乇。